I think you are both right and I took that link from The National Council Metal Detecting in England......
Hi Lucky. That link has circulated around for a long time now. It was a noble idea to put together. I mean, like a one-stop resource for anyone getting ready to travel to those various countries, right ? But as you can see, the psychology of
"Sometimes no one cared... UNTIL you asked", can apply on a national scale too.
The question (when preparing for those lists) would logically go to legal beaver travel consulate people wherever they were inquiring. And then perhaps get bandied around to various lawyer types or archies or whomever. And then dire-sounding answers, such as you see, passed back-down the chain. Presto, easy, eh ?
We had the same psychology develop here in the USA too: Persons as far back as the early 1980s, attempted to make a state-by-state list of each state's policies, regarding md'ing in their state parks. Sounds easy enough, eh? So the guy sends out 50 xeroxed letters to each state capitol head park's dept. people. Hey, who better to ask, than the top-most folk, eh ? And some of states, not unlike your Europe list, came back with dire sounding answers, or outright "no's". Oddly, you had old-timers in those states, who .... upon reading this, were scratching their heads saying to themselves "SINCE WHEN?". Because it had never been an issue or problem (barring unless you're being a nuisance, or snooping at sensitive monuments, etc....).
So for this reason, I take that Europe link of yours with a grain of salt, sorry to say. I mean, sure "use common sense", but .... on the other hand, it requires a little reading between the lines.